By Elizabeth Piper and Elizabeth Pineau LONDON (Reuters) -British Prime Minister Keir Starmer and French President Emmanuel Macron will announce tougher migration controls on Thursday, capping a state visit designed to deepen ties,

The deal could see the UK returning some small boat migrants to France, with France sending other asylum seekers to the UK in return.

Britain and France have agreed to a pilot plan that will send some migrants who cross the English Channel on small boats back to France as the U.K. government struggles to tamp down criticism that it has lost control of the country’s borders.